Vacuum cleaner



FIG. 1 is a perspective view from the front and the right side of the vacuum cleaner;

FIG. 2 is a perspective view from the front and the left side of the vacuum cleaner of FIG. 1;

FIG. 3 is a front elevation view of the vacuum cleaner of FIG. 1;

FIG. 4 is a rear elevation view of the vacuum cleaner of FIG. 1;

FIG. 5 is an elevation view of the right side vacuum cleaner of FIG. 1;

FIG. 6 is an elevation view of the left side of the vacuum cleaner of FIG. 1; and,

FIG. 7 is a top plan view of the vacuum cleaner of FIG. 1.

The details shown in broken lines form no part of the claimed design. 

I claim the ornamental design for a vacuum cleaner, as shown and described. 